File:OU Phi Gamma Delta.JPG|thumb|Phi Gamma Delta Fraternity house at Ohio University.
'''Phi Gamma Delta''' (also known as '''FIJI''' and '''Phi Gam''') is a social Fraternities and sororities|fraternity
with more than 120 active chapters and 18 colonies across the United States
. It was founded at Washington & Jefferson College|Jefferson College
, Pennsylvania, in 1848. Along with Phi Kappa Psi
, Phi Gamma Delta forms a half of the Jefferson Duo
["North American College Fraternities: The 'Jefferson Duo'", page 68. The Purple Pilgrim: The Fraternity of Phi Gamma Delta Guide to Brotherhood. 2004]
Since its founding in 1848, the fraternity has initiated more than 170,000 brothers. The nickname FIJI is used commonly by the fraternity due to Phi Gamma Delta bylaws that limit the use of the Greek letters.